Bump appraisal from 2.3.0 to 2.5.0

[dependabot[bot]]

Bumps appraisal from 2.3.0 to 2.5.0.

Release notes

Sourced from appraisal's releases.

2.5.0

• Split binstubs from accepance test helpers install (#209)
• Drop support for Travis CI (#208)
• Fix missing source deprecation warning (#207)
• Fix relativizing directory on non-path remotes (#205)
• Fix broken logo on the README.md (#197)
• Run specs with bundler 2.3.7 (#194)
• Switch to using Bundler.with_original_env (#202)
• Add options to customize generated gemfiles (#191
• Fix __FILE__ and __dir__ in primary Gemfiles (#193)
• Implement Bundler install_if (#176)

2.4.1

• Explicit require for Set (#184)
• Silence gem list command output (#181)

2.4.0

• Add ability to remove gem from appraisal (#171)

Commits

• feb78bc Bump version to 2.5.0
• b200e63 Split binstubs from accepance test helpers install (#209)
• 4613b07 Drop support for Travis CI (#208)
• fda1f06 Fix missing source deprecation warning (#207)
• ac72bac Fix relativizing directory on non-path remotes (#205)
• 0c855ae Fix broken logo on the README.md (#197)
• 47fca0d Run specs with bundler 2.3.7 (#194)
• ea2baff Switch to using Bundler.with_original_env (#202)
• 40956d3 Add options to customize generated gemfiles (#191)
• 97079f0 Fix __FILE__ and __dir__ in primary Gemfiles (#193)
• Additional commits viewable in compare view

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